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Machine shop Operations > Machine Shop > Flashcards

Machine Shop Flashcards

1
Q

What is the formula for spindle rpm

A

3.82 x cutting speed / diameter of work

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2
Q

What is UNC

A

Unified National Coarse

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3
Q

What is UNF

A

Unified National Fine

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4
Q

What is UNEF

A

Unified National Extra Fine

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5
Q

What are the three types of tooth set blades

A

raker, wavy, alternate

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6
Q

One of the most important factors in successful band sawing is a

A

proper cutting speed

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7
Q

What are some advantages using a circular saw

A

burr free mill finish, cuts of extreme accuracy

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8
Q

what do you call a multisided tool to which a number of different cutting tools are attached

A

turret

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9
Q

what is the process for final finishing to close dimensions

A

grinding

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10
Q

where there is a high degree of precision and surface finish and surface finish is needed

A

lapping

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11
Q

T or F drilling machines is much broader in meaning and includes all types of machines designed for drilling

A

True

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12
Q

What are the 3 parts of a drill press

A

Head, spindle, table, base

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13
Q

What is the purpose of a center punch

A

center punch is used to make an indentation for the drill point at the center to aid the drill in getting started

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14
Q

What are the main parts of the twist drill

A

shank, body, point

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15
Q

what are twist drills made of

A

carbon steel, high speed steel

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16
Q

Normal purpose angle of a twist drill is

A

118 degrees

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17
Q

T or F
High speeds and light feeds are recommended for automatic drilling machines where holes don’t exceed four drill diameters in depth

A

T

18
Q

a tool that makes a taper or bevel the end of a hole is a

A

countersink

19
Q

what is a drill drift

A

removes twist drills sleeves and sockets from drill press spindle

20
Q

used to raise work above the drill press table to not damage vise or table

A

parallels

21
Q

manufacturers use this term to designate maximum diameter of the work can be machined

A

swing

22
Q

T or F
Carriage assembly is the entire unit that moves lengthwise along the ways between headstock and tailstock

A

True

23
Q

T or F
Feed is distance that a tool advances work during half revolution

A

False (one revolution)

24
Q

what tool is used to machines the ends of the work and to machine shoulders

A

facing tool

25
Q

In straight turning between centers cutting edge of the tool should be set

A

5 degrees above center

26
Q

T or F
The distance from a point on a screw thread to a corresponding point on a adjacent thread measured parallel to the axis is called pitch

A

True

27
Q

T or F
For right hand threads the carriage must travel toward the headstock

A

True

28
Q

what does the steady rest support

A

long stock

29
Q

many injuries caused to the hand by

A

bind and twist

30
Q

What are the three high production machines

A

turret lathes, multi tool, and multi spindle

31
Q

what tool removes alot of metal

A

rough cut tool

32
Q

what attachment is widely used method of machining tapers

A

taper attachment

33
Q

turret lathes are classified as

A

vertical or horizontal

34
Q

knee and column mill is classified as

A

horizontal or vertical

35
Q

T or F
knee and column milling machine used more frequently in tool and die shops

A

True

36
Q

machines depends on being kept clean to improve

A

accuracy and durability

37
Q

various methods of mounting work on the milling machine for machining are

A

table, chuck, arbor

38
Q

why is it bad to have dull cutters

A

dull cutters wears more rapidly, does not last as long

39
Q

what are the two types of grinding

A

precision and non precision

40
Q

T or F
Surface grinders are used for grinding precision parts

A

True

41
Q

What does CNC stand for

A

Computer Numerical Control

Machine shop Operations (1 decks)

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